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Temporal-spatial distribution and ore-forming material source of gold,copper and silver polymetallic ore deposits in the Fuping mantle structure zone 被引量:6
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作者 WANG Baode NIU Shuyin +6 位作者 sun aiqun LIU Yaming XIE Yan JIANG Xiaoping ZHAO Yongli GAO Yincang ZHAO Fuwang 《Chinese Journal Of Geochemistry》 EI CAS 2010年第3期270-277,共8页
This study was conducted following research on metallogenesis in the Zhangjiajie-Xuanhua and East Hebei mantle branch structure zones. The Fuping mantle branch structure zone is one where Au, Cu and Ag poly-metallic o... This study was conducted following research on metallogenesis in the Zhangjiajie-Xuanhua and East Hebei mantle branch structure zones. The Fuping mantle branch structure zone is one where Au, Cu and Ag poly-metallic ore resources are concentrated in North Hebei. However, there has existed a long-standing controversy on the temporal-spatial distribution of ore resources and their ore-forming material sources. In terms of age dating and the comprehensive analysis of S, Pb, O, C and Si isotopes, it is considered that the temporal-spatial distribution of ore resources in this mantle branch structure zone is obviously controlled by the Fuping mantle branch structure. In space there is developed such a metallogenic pattern as to be Ag, Pb and Zn polymetallic ore deposits with gold appearing inside and copper appearing outside. Metallogenesis is dated mainly at Yanshanian, the ore-forming materials were derived predominantly from the deep interior of the Earth, and ore-forming fluids were derived largely from Yanshanian magmatism. 展开更多
关键词 银多金属矿 成矿作用 多金属矿床 时空分布 物质来源 构造带 黄金
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Analysis of the ore-controlling structure of the Shihu gold deposit, Hebei Province and deep-seated ore-prospecting prediction 被引量:6
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作者 NIU Shuyin WANG Baode +9 位作者 sun aiqun CHEN Chao WANG Zili MA Baojun WANG Wenxue JIANG Xiaoping ZHAO Yongli GAO Yincang LIU Huabin QIU Jianping 《Chinese Journal Of Geochemistry》 EI CAS 2009年第4期386-396,共11页
Under the guidance of the theory of mantle-branch structure-associated metallogenesis and on the basis of the geological characteristics, analysis of the ore-forming and ore-controlling structures, the geochemical cha... Under the guidance of the theory of mantle-branch structure-associated metallogenesis and on the basis of the geological characteristics, analysis of the ore-forming and ore-controlling structures, the geochemical characteristics of metallogenesis, the source of ore-forming materials, changes in the physical and chemical conditions of metallogenesis, changes in the vertical width of ore veins, and changes in gold grade of the Shihu gold deposit, the mechanism of its metallogenesis was discussed and the rules of vertical variation of ore veins were summarized in this study. It is pointed out that the orebodies under exploitation at present time should be in the middle and upper portions of gold veins in the Shihu gold mining district. Particularly on the basis of the characteristics of mantle-branch structure-associated metallogenesis, it is indicated that metallogenesis is controlled mainly by such ore-forming conditions as temperature and pressure. Deep-seated ore-forming fluids are characterized mainly by injection and precipitation. So the vein bodies in the adjacent metallogenic structures are of obvious comparability, and there would be great prospects for ore search both at depth and in the periphery of the Shihu gold deposit. Therefore, ore prospecting should be strengthened both at depth and in the peripheries. 展开更多
关键词 分支结构 找矿预测 金矿脉 控矿 河北省 成矿理论 地球化学特征 成矿物质来源
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地幔热柱多级演化及其幔枝构造成矿控矿——以胶西北郭家店幔枝构造为例 被引量:9
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作者 牛树银 孙爱群 +3 位作者 陈超 张福祥 张建珍 王丰翔 《地质力学学报》 CSCD 2020年第5期656-672,共17页
文章简要介绍了幔枝构造成矿理论,探讨了幔枝构造的特征、单元划分、断裂构造体系以及成矿控矿作用。在燕山运动晚期,华北东部地区进入了以伸展构造为主的地幔热柱演化阶段,在胶西北地区形成了莱阳地幔亚热柱及其外围郭家店、栖蓬、牟... 文章简要介绍了幔枝构造成矿理论,探讨了幔枝构造的特征、单元划分、断裂构造体系以及成矿控矿作用。在燕山运动晚期,华北东部地区进入了以伸展构造为主的地幔热柱演化阶段,在胶西北地区形成了莱阳地幔亚热柱及其外围郭家店、栖蓬、牟乳等幔枝构造。其中,郭家店幔枝构造于燕山运动晚期发生强烈的构造活动,总体形成了以焦家断裂为主的拆离带和与其相交的以三山岛断裂为反向铲状断裂的构造体系,同时控制着玲珑、焦家、三山岛等一系列大型—超大型矿床的形成。在众多成矿控矿因素中,区域性断裂构造是重要的主导性因素,既为成矿流体的运移提供了通道,又为成矿储矿提供了有利空间。深源含矿流体可通过地幔热柱→地幔亚热柱→幔枝构造→有利构造扩容带,即脆韧性-韧脆性剪切带、侵入岩体的内外接触带、密集的构造裂隙带、各种脉岩与围岩的接触带等有利构造部位集聚成矿。近年来在胶西北深部勘查发现,浅部沿断裂展布的若干个大—中型金矿在其深部的成矿蚀变构造带可能是连为一体的,一起组合成为超大型金矿。 展开更多
关键词 幔枝构造 地幔热柱 成矿作用 控矿构造 成矿规律 找矿方向 胶西北地区
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Study on the Metallogenetism of Sub-mantle Plume and Mantle Branches in the Gold Mineralization Concentration Area of Northwest Jiaodong Peninsula 被引量:4
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作者 NIU Shuyin CHENG Guangsuo +8 位作者 ZHANG Jianzhen sun aiqun MA Baojun ZHANG Fuxiang WANG Baode XU Meng WU Jichun ZHAO Rongxin WANG Shanfei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第5期1409-1420,共12页
The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval (115±5Ma) of gold mineralization in China. Studies show that the ea... The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval (115±5Ma) of gold mineralization in China. Studies show that the east area of north China began its mantle plume evolution since the Yanshanian movement, and the Laiyang sub-mantle plume and its surrounding mantle branches such as those in Guojiadian, Aishan and Panshidian were formed in the mineralization concentration area of northwestern Jiaodong peninsula. With the development of mantle plume →sub-mantle plume → mantle branch→ favorable expending structures, the deep-derived hydrothermal fluid moved up to the favorable places, such as brittle-ductile or ductile-brittle shearing zones, the internal and external contact zones of intrusions, dense fracturing zones and the contact zones between dikes and countryrocks, and concentrated into deposits. Then the gold mineralization concentration zones that are centralized on mantle branches were formed. This study takes Guojiadian mantle branch as an example to discuss their metallogenetism and conclude the metallogenetic mode. 展开更多
关键词 sub-mantle plume mantle branch ore-controlling structure metallogenetism metallogenetic mode northwest Jiaodong peninsula
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Comparison between the Xishimen gold deposit and the Shihu gold deposit in western Hebei and analysis of the potential for ore exploration 被引量:3
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作者 CHEN Chao NIU Shuyin +4 位作者 WANG Zili GUO Zhong sun aiqun WANG Baode GAO Yincang 《Chinese Journal Of Geochemistry》 EI CAS 2011年第3期281-289,共9页
The Xishimen gold deposit is located in the tectonic zone southeast to the Shihu gold deposit, both of which belong to the same orefield. Then, how is the prospecting potential for the Xishimen gold deposit? A com-par... The Xishimen gold deposit is located in the tectonic zone southeast to the Shihu gold deposit, both of which belong to the same orefield. Then, how is the prospecting potential for the Xishimen gold deposit? A com-parison was made between the Xishimen gold deposit and the Shihu gold deposit on the basis of their geological background of metallogenesis, geological characteristics of the ore deposits, the sources of ore-forming materials, etc. The results showed that both the deposits possess many similarities in the respects mentioned above. And their met-allogeneses can be compared. Therefore, there is great potential for ore prospection in the periphery or at the deep levels of the Xishimen gold deposit. Ore exploration should be well programmed on the basis of a better dissection of the tectonic setting of the orefield. A breakthrough in ore prospection of the Xishimen gold deposit will be of great instructive significance in regionally geological prospecting. 展开更多
关键词 找矿潜力 金矿床 石门 潜力分析 成矿地质背景 西部 河北 矿床地质特征
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Mantle Branch Structure in the South-Central Segment of the Da Hinggan Mts.,Inner Mongolia and Its Ore-controlling Role 被引量:4
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作者 NIU Shuyin sun aiqun +5 位作者 WANG Baode NIE Fengjun JIANG Sihong SHAO Ji'an GUO Lijun LIU Jianming 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2009年第6期1148-1162,共15页
Mantle branch structure is the third tectonic unit of multiple evolution of a mantle branch. It is not only the main mechanism of intercontinental orogeny, but also an important ore-forming and ore-control structure. ... Mantle branch structure is the third tectonic unit of multiple evolution of a mantle branch. It is not only the main mechanism of intercontinental orogeny, but also an important ore-forming and ore-control structure. Studies on geotectonic evolution, regional geological characteristics and oreforming and ore-control structures have shown that since the Mesozoic the Da Hinggan Mts. region has entered a typical intercontinental orogenic stage, and it is closely related to mantle branch activities. The south-central segment of the Da Hinggan Mts. is a typical mantle branch structure and possesses obvious magmatic-metamorphic complexes in the core, detachment slip beds in the periphery and overlapped fault depression basins. Moreover, all of these are the principal factors leading to ore formation and ore control in the region. This paper also further explores the mechanism of mineralization in the south-central segment of the Da Hinggan, summaries the rules of mineralization, puts forward the models of mineralization and points out future ore-exploring orientation. 展开更多
关键词 mantle branch structure mantle branch metallogenic model Da Hinggan Mts.
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Source of ore-forming material for the Huangtuliang gold deposit,Hebei Province and ore prospecting in the deep periphery 被引量:4
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作者 NIU Shuyin sun aiqun +6 位作者 WANG Baode HAN Yuchou WEI Minghui ZHANG Hai ZHANG Ge SHI Ping WANG Wenxing 《Chinese Journal Of Geochemistry》 EI CAS 2008年第3期225-234,共10页
The Huangtuliang gold deposit is characterized by its wide and large ore belt,stable extension and closely spaced orebodies.Unfortunately,no orebody was found by deep drilling.As a result,ore prospecting in this regio... The Huangtuliang gold deposit is characterized by its wide and large ore belt,stable extension and closely spaced orebodies.Unfortunately,no orebody was found by deep drilling.As a result,ore prospecting in this region was once put into dilemma.Detailed analysis of ore-forming and ore-controlling structures in the mining district by the authors has revealed that the ore-forming and ore-controlling structure in this mining district is a steeply dipping(85°-110°/∠70°-85° N-NNE),spade-shaped ductile shear zone,and the ore-controlling structures are a series of nearly erected second-ordered faults which are developed in the upper part of the ductile shear zone,intersecting with the ductile shear zone.Deep cutting of the ductile shear zone made it possible the ascending of ore fluids from the mantle plume at depth and these ore fluids would migrate upwards along the ductile shear zone under certain temperature and pressure conditions.Along their ascending path,the ore fluids would extract ore-forming elements from the country rocks and the extracted ore-forming elements would be deposited as ores in the hanging-wall second-ordered faults.The reason why no orebody was found in early prospecting at depth is that northward-dipping drilling in the southern part of the shear zone extended so deeply as to be beneath the shear zone.Only shallow-level orebodies could be found by southward-dipping drilling practice in the northern part of the shear zone.The location where deep-seated orebodies occurred shifted northwards and the orebodies occurred at greater depth.Therefore,it is natural that no orebody could be found when drill core passed through the shear zone.After the ore-forming and ore-controlling structures were well understood,the focus of ore prospecting was placed on the deep-level,northward-penetrating veins.In this way a number of new blind orebodies of great thickness have been found.On the basis of research development in the mining district,a prospecting plan has been made for ore prospecting in the periphery of eastern mining district.Prospecting practice has shown that there occur generally continuous engineering orebodies at large intervals.So,the Huangtuliang gold deposit has turned at one stroke from a medium sized to a large-sized,even a super-large gold deposit between prospecting lines 30-98. 展开更多
关键词 地幔分支结构 地幔热流柱 矿石 河北
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Analysis of the ore-controlling role of Guojiadian mantle branch structure,Northwest Shandong Peninsula,China 被引量:2
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作者 NIU Shuyin sun aiqun +6 位作者 ZHANG Jianzhen MA Baojun WANG Baode CHEN Chao ZHANG Fuxiang LIU Cheng ZHANG Xiaofei 《Chinese Journal Of Geochemistry》 EI CAS 2012年第4期414-423,共10页
Metallogenesis in the gold ore-concentrated zone of Northwest Shandong Peninsula is closely related to deep processes.The region in the eastern part of North China entered into the stage of mantle plume evolution duri... Metallogenesis in the gold ore-concentrated zone of Northwest Shandong Peninsula is closely related to deep processes.The region in the eastern part of North China entered into the stage of mantle plume evolution during the Yanshanian movement,following the long-time stage of stable platform evolution during Paleozoic time.At that time,the ore-concentrated zone of Northwest Shandong Peninsula just entered into the development-evolution stage of the Laiyang sub-mantle plume and the Guojiadian mantle branch structure in its periphery.The core-mantle-source gold was present in the gas-liquid form,and it migrated through mantle plume→sub-mantle plume→mantle branch structure→favorable tectonic expansion zone to the favorable loci of the mantle branch structure,where gold was deposited as ores,thereafter constituting a series of large-to medium-sized gold deposits distributed around the Guojiadian mantle branch structure.This study also dealt with the Jiaojia fault as the main detachment(fault altered rock) belt on the northwestern margin of the mantle branch structure and also presented a basic cognition about the fact that the Sanshandao fault as the listric fault on the hanging wall of the detachment belt.Furthermore,on this basis,this study also pointed out the orientation for further ore prospecting in this region. 展开更多
关键词 分支结构 山东半岛 地幔柱 中国北方 西北部 控矿作用 演化阶段 焦家断裂带
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Helium-argon isotopic tracing for the Pb-Zn-Ag polymetallic ore deposits in the central-south segment of the Da Hinggan Ling Range 被引量:2
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作者 WANG Baode NIU Shuyin +4 位作者 sun aiqun HU Huabin LIU Yaming GUO Lijun WANG Shuo 《Chinese Journal Of Geochemistry》 EI CAS 2008年第3期235-241,共7页
In recent years big strides have been made in the exploration of ores in the central-south segment of the Da Hinggan Ling Range,though some debates still exist on the metallogenesis and sources of ore-forming material... In recent years big strides have been made in the exploration of ores in the central-south segment of the Da Hinggan Ling Range,though some debates still exist on the metallogenesis and sources of ore-forming materials.Pyrite and other sulfides in direct relation to the Pb-Zn-Ag ore deposits were chosen for the He and Ar isotopic analysis of ore-forming fluids,and the first He and Ar isotope data have been obtained from the study region.3He/4He ratios in 14 samples collected from 7 mining districts are 2.17×10-6-12.52×10-6,averaging 6.86×10-6 and their R/Ra ratios are 1.56-9.01 Ra,averaging 4.37 Ra.By projecting the data points onto the 3He-4He concentrations diagram,all the points fall near the mantle helium area.The calculated mantle-source helium ratios are within the range of 19.58%-76.96%,with an average of 49.52%.Argon isotopic characteristics are close to those of mantle source,indicating that the ore-forming material was transport upwards via the multi-stage evolution of mantle plume and concentrated as ores in the favorable loci of mantle branch structures. 展开更多
关键词 同位素合成 矿石材料 沉积物 地幔分支结构
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Study on the ore-forming and ore-controlling structure of the Mujicun Cu (Mo) ore deposit, Hebei Province, China 被引量:2
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作者 NIU Shuyin MA Guoxi +8 位作者 CHEN Zhikuan WANG Baode CHEN Lijing sun aiqun MA Xiaofeng ZHANG Jianzhen MA Baojun CHEN Chao LU Hongpeng 《Chinese Journal Of Geochemistry》 EI CAS 2012年第1期1-14,共14页
The Mujicun Cu (Mo) ore deposit at Laiyuan, Hebei Province, is a currently proven large-sized Cu (Mo) polymetallic ore deposit and it is located in the second-ordered fault depression basin of the ditachment belt on t... The Mujicun Cu (Mo) ore deposit at Laiyuan, Hebei Province, is a currently proven large-sized Cu (Mo) polymetallic ore deposit and it is located in the second-ordered fault depression basin of the ditachment belt on the hanging-wall on the western side at the juncture of the Laiyuan dumbell-shaped complex in the northern part of the Fuping mantle-branch structure. Metallogenesis is controlled by diorite porphyrite in intrusive relation with the fault depression basin and other relevant fault structure systems and intenstive wall-rock alteration zones. This study, in conjunction with the most recent exploration data, analyzed the geological background of metallogenesis of this deposit, summaried the geological characteristics of typical ore deposits, determined the alteration zonation of the deposit, investigated regional metallogenesis and the genesis of typical ore deposits, discussed the regional ore-forming and ore-controlling structures, and generalized the regional ore-controlling model and metallogenic model of the deposit. It is considered that the Mujicun porphry Cu (Mo) deposit, the Tieling, Futuyu, Xiaoligou and other skarn-type Fe-Cu deposits and the He'ergou hydrothermal-type Pb-Zn-Ag deposit jointly constitute a three-in-one polymetallic orefield, with the characteristics of typical metallogenic series. 展开更多
关键词 多金属矿床 控矿构造 成矿控制 河北省 铜矿 中国 断裂构造系统
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Metallogenic characteristics of the region of Northwest Hebei and analysis of ore prospecting potential in its peripheries 被引量:1
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作者 sun aiqun NIU Shuyin +5 位作者 WANG Baode HAN Yuchou WEI Minhui MA Baojun ZHAO Zhiyuan XIA Dong 《Chinese Journal Of Geochemistry》 EI CAS 2011年第1期1-13,共13页
The region of Northwest Hebei is an area where Au-Ag polymetallic ore depsits are concentrated in Hebei Province. There were divided the Au ore-concentrated region with the magmatic-metamorphic diamictite zone as the ... The region of Northwest Hebei is an area where Au-Ag polymetallic ore depsits are concentrated in Hebei Province. There were divided the Au ore-concentrated region with the magmatic-metamorphic diamictite zone as the center and the perpheral cover-strata zone and Ag-polymetallic metallogenic zone along the line of Xuanhua-Songli-Chicheng. Research on mantle branch structure indicates that Au-Ag polymetallic ore-forming materials come mainly from the deep interior of the Earth. The ore-forming materials tend to migrate upwards through the multi-stage evolution of mantle plume, and are concentrated as ores in the favourable tectonic expansion zone of a mantle branch structure. As viewed in plane, from the center to the periphery and as viewed in space, from the lower part to the upper part there exists Au-Ag-Pb-Zn zonation, as evidenced by drilling data from a number of mines. So, there is still great potential for ore prospecting in the region of Northwest Hebei. 展开更多
关键词 成矿地质特征 冀西北地区 找矿潜力 银多金属矿 多金属成矿带 地球深部 成矿物质 多级演化
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Endogenic Au-Ag polymetallic ore deposits and ore-bearing potentiality of strata 被引量:1
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作者 WANG Baode NIU Shuyin +4 位作者 sun aiqun XIE Yan LUO Yi LIU Hailong WANG Yanhua 《Chinese Journal Of Geochemistry》 EI CAS 2010年第4期407-415,共9页
The problem of ore-bearing potentiality of the strata involves metallogenic theory and ore-search orientation.Studies of the spatial distribution of endogenic Au-Ag polymetallic ore deposits in North Hebei indicated t... The problem of ore-bearing potentiality of the strata involves metallogenic theory and ore-search orientation.Studies of the spatial distribution of endogenic Au-Ag polymetallic ore deposits in North Hebei indicated that the strata in which ore deposits occurred range in age from Paleozoic,Proterozoic to Mesozoic.In addition the ore deposits are characterized as being strata-bound in nature.The arise and establishment of "extracting" viewpoint may be attributed to the following three reasons:1) influence by the idea of "ore-source bed";2) limitation of analytical techniques in the 1980s'(especially gold element);and 3) a small number of samples(sampling locations were mostly disturbed by mineralization).Studies have shown that ore-forming materials would most probably come from the deep interior of the Earth.Deep-seated ore-bearing materials including Au-Ag polymetals were brought to the shallow levels by way of mantle plume-mantle sub-plume-mantle branch structure multi-stage evolution,finally leading to the formation of ore deposits. 展开更多
关键词 银多金属矿床 含矿地层 地幔亚热柱 找矿方向 成矿理论 空间分布 地层性质 地球深部
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胰腺导管腺癌中PD-L1的表达及其与临床病理特征的关系 被引量:1
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作者 袁静 孙爱群 +4 位作者 许发美 邓燚 田侠 王湛博 石怀银 《胃肠病学和肝病学杂志》 CAS 2021年第7期763-766,共4页
目的探讨程序性死亡配体-1(programmed death-ligand 1,PD-L1)在胰腺导管腺癌(pancreatic ductal adenocarcinoma,PDAC)中的表达情况及其与临床病理特征、预后的关系。方法收集2016年12月至2020年12月中国人民解放军总医院第一医学中心... 目的探讨程序性死亡配体-1(programmed death-ligand 1,PD-L1)在胰腺导管腺癌(pancreatic ductal adenocarcinoma,PDAC)中的表达情况及其与临床病理特征、预后的关系。方法收集2016年12月至2020年12月中国人民解放军总医院第一医学中心病理科确诊的PDAC手术切除标本82例,采用PD-L1检测试剂盒(免疫组织化学法)(PD-L1 IHC 22C3 pharmDx)检测肿瘤细胞及相关免疫细胞中PD-L1表达(CPS评分),并分析其表达水平与PDAC临床病理特征及预后的关系。结果在PDAC标本中,有29例(35.4%)PD-L1高表达,53例(64.6%)低表达。PD-L1在特殊亚型导管腺癌的高表达率高于普通导管腺癌(100%vs 30.3%)(P=0.001),在低分化癌中的高表达率高于高-中分化癌(77.8%vs 30.1%)(P=0.008)。PD-L1的表达与患者性别(P=0.273)、年龄(P=0.248)、肿瘤最大径(P=0.440)、淋巴结转移(P=0.062)、肿瘤部位(P=0.787)以及是否伴有IPMN(P=0.660)均无相关性。PD-L1的表达状态对PDAC患者的总生存期无影响(P=0.900)。结论PD-L1在低分化及特殊亚型PDAC中表达更高;PD-L1的表达状态与PDAC患者的总生存期无相关性。 展开更多
关键词 胰腺肿瘤 程序性死亡配体-1 导管腺癌 免疫组织化学染色
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Isotope tracers for deep-seated fluids and noble gases
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作者 WANG Baode NIU Shuyin +3 位作者 sun aiqun ZHANG Jianzhen WANG Xiang WANG Chuen 《Chinese Journal Of Geochemistry》 EI CAS CSCD 2013年第2期195-202,共8页
The role of He and Ar isotopes in tracing the source of ore fluids has aroused great attention of the broad masses of the geological researchers. On the basis of lots of test and measurement of He and Ar isotopes in s... The role of He and Ar isotopes in tracing the source of ore fluids has aroused great attention of the broad masses of the geological researchers. On the basis of lots of test and measurement of He and Ar isotopes in sulfides from Au, Ag polymetallic ore deposits in northern China, statistics has been made on the published He and Ar isotope data from 27 gold deposits, 13 silver polymetallic ore deposits, 8 polymetallic ore deposits, 1 rare-earth deposit, 3 oceanic incrustations, 3 volcanic springs and their wall rocks and granites. The statistical results indicate that the 3 He/ 4 Ar (×10-6 ) values of the Au, Ag polymetallic ore deposits are within the range of 0.24 9.39, with an average of 3.34×10-6 ; the He/Ar values, 0.007 6.01,with an average of 2.37; the 40 Ar/ 36 Ar values, 265.75 2361, with an average of 699.0; the 4 He/ 40 Ar values, 0.0020 643.86, with an average of 5.85, the 3 He/ 4 Ar (×10-6 ) values of gneiss and granite surrounding the mining area, 0.001 1.79, with an average of 1.00×10-6 , reflecting great differences in source. Mantle-source He in 48 Au, Ag polymetallic ore deposits accounts for 4.55% 83.06%, averaging 29.91%. It falls near the mantle-source region which can be seen in the He isotopic concentration diagram and the 3 He/ 4 He(R/Ra) 40 Ar/ 36 Ar plot. Studies suggested that the ore-forming materials for endogenic Au, Ag polymetallic ore deposits should be derived from the deep interior of the Earth, and with the multi-stage evolution of mantle plumes the deep-seated ore fluids would be transported from the deep interior of the Earth to the shallow levels. During this process the mixing of crust/mantle-source fluids would inevitably occur, therefore, the value range always lies between the mantle and the crust. 展开更多
关键词 成矿流体 同位素示踪 稀有气体 银多金属矿床 氦同位素 氩同位素 幔源流体 地球内部
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On the metallogenesis of Dajing Cu-Sn-polymetallic ore deposit,Inner Mongolia,China
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作者 NIU Shuyin sun aiqun +4 位作者 WANG Baode LIU Jianming GUO Lijun HU Huabin XU Chuanshi 《Chinese Journal Of Geochemistry》 EI CAS 2007年第4期394-401,共8页
The Dajing Cu-Sn-polymetallic ore deposit is famous for its large scale, abundant associated elements, narrow and closely-spaced development of ore veins and high grade, but exploration within the mining district and ... The Dajing Cu-Sn-polymetallic ore deposit is famous for its large scale, abundant associated elements, narrow and closely-spaced development of ore veins and high grade, but exploration within the mining district and its deeper parts has revealed no Yanshanian rockbody. Therefore, there have been proposed a diversity of hypotheses on the genesis of the deposit. The authors, from the angle of mantle-branch structure, provided evidence showing that the mining district is located in the core of the Da Hinggan Ling mantle-branch structure, the multi-stage evolution of mantle plume paved the way for the ascending of deep-source ore fluids and these fluids extracted part of the ore-forming materials. Then, these ore-forming materials were concentrated in the favorable structural loci (e.g. structural fissures) to form ores. The orientation of ore-forming and ore-controlling fissures is closely related to the regionally structural stress field at the metallogenic stage. The zonation of Sn, Cu, Au, Ag, Pb, and Zn within the mining district appears to be related to metallogenesis and the crystallization temperature of ore-forming materials. Mineralization of Sn, Cu, Au, etc. which require relatively high crystallization temperature and pressure is in most cases recognized in the central part of the mining district, while that of Ag, Pb, Zn, etc. which require relatively low crystallization temperature and pressure is, for the most part, produced in the periphery of the mining district. 展开更多
关键词 地幔支路结构 中国 内蒙古 矿石
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